Deputy fatally shoots dog in deadly Liberty Co. mauling

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July 2, 2013 7:32:48 PM PDT

HOUSTON --

A dog who mauled a woman to death in Liberty County was shot and killed by a deputy Tuesday evening.

Authorities say a resident down the street from where 63-year-old Linda Oliver was killed on Monday saw him in the woods behind his house. Deputies responded to the area, and when the dog charged at a deputy near a ditch, the deputy shot him twice killing him.

Before she died, Oliver called her husband for help after being bitten by the dog. Police say it was a stray which they had taken in. It first attacked their smaller dog, then turned on Oliver as she tried to break it up.

The dog is a black mastiff-rotweiller mix with a white spot on its chest.

"Law Enforcement had planned to tranquilize the animal if possible but his aggressive nature prevented this," the Liberty County Sheriff's Office said in a prepared statement. "However, the end results for the dog would have eventually been the same."

Authorities say the dog's remains will be sent off to a laboratory in Katy for examination on Wednesday.